Piano.



R. M. BENT.

PIANO.

APPLICATION FILED APR.14. 1909.

Patented Jan. 11, 1910.

WITNESSES:

- ATTORNEY RICHARD M. BENT, OF NEW YORK, N. Y.

PIANO.

Specification of Letters Patent.

Patented Jan. 11, 1910.

Application filed April 1 1, 1909. Serial No. 489,787.

To all whom it may concern:

Be it known that I, Rioirann M. BENT, a citizen of the United States,residing at the city of New York, borough of Manhattan, in the countyand State of New York, have invented certain new and useful Improvementsin Pianos, of which the following is a full, clear, and exactspecification.

My invention relates to improvements in musical instruments, and thesame has for its object more particularly to provide a simple, efficientand easily removable keyboard bed for pianos, organs and similarinstruments so as to permit of said instruments being readily moved orcarried through narrow passages or stairways.

Further, said invention has for its object to provide means for securelyattaching the key-board bed to the casing in such a manner as to preventthe parts becoming accidentally loose and causing vibration or rattlingand thus interfere with the operation of the instrument.

Further, ,aid invention has for its object to provide the key-board withmeans to be engaged by a bolt extending through said casing which meansmay be firmly secured to and within said keyboard bed.

To the attainment of the aforesaid objects and ends my inventionconsists in the novel details of construction, and in the combination,connection and arrangement of parts hereinafter more fully described andthen pointed out in the claims.

In the accompanying drawings forming part of this specification whereinlike nu- .nerals of reference indicate like parts, Figure 1 is avertical section showing one form of piano case constructed according toand embodying my said invention; and in dotted lines, the key-board bedand attached parts being shown detached from said case, and Fig. 2 is anenlarged detail side view showing one of the ends of the key-board bed;Fig. 3 is a detail perspective view of a bolt, and the part to beengaged thereby; the latter being shown before the same is secured insaid end, and before the key-board bed is secured to the case, and Fig.1 is a detail plan view showing a portion of the keyboard bed and one ofthe ends thereon.

In said drawing designates a piano case of the upright type, providedupon the inner side of each of its opposite ends with guide 12, havingan inwardly and clownwardly inclined lower edge.

13 denotes the key-board bed which is constructed essentially in theusual manner, and provided with a bracket 14- at each end. At each endof the key-board bed 13 is secured a vertical end 15 provided with arearwardly extending portion 16 which is partly cut away to form ashoulder 17, and the upper edge of each end is beveled rearwardly anddownwardly, so as to cause the rearwardly projecting portion 16 toengage the guides 11 and 12 and be held in wedging engagementintermediate the same. Each of the ends 15 of the key-board bed isprovided in its rearwardly extending portion 16 with an opening 18,having straight front and back edges and its upper and lower edgestapering rearwardly, and 19 de notes a tapering block which correspondsin outline substantially with the opening 18 in the end portion 16 andis adapted to be secured within said opening by gluing or other suitablemeans. Each of said blocks 19 is provided with a central, longitudinalopening which registers with a horizontal opening 21 provided in therearwardly eX- tending portion 16 of each end 15.

22 denotes a bolt having slotted head which extends into the casing 10from the rear thereof, and into the opening 21 in the rearwardlyprojecting portion 16 of the end 15 and is provided at its forward endwith a tapering end having coarse wood screwthreads 23 adapted to engagethe opening in the block 19 whereby to draw the ends 15 15 of thekeyboard bed firmly into the guides 11 12 and the shoulders 17 17against the front of said case 10 when said bolts 22 are screwed home.

In order to obtain the best results, I preferably construct the ends 15of the keyboard bed with the grain arranged horizontally, and constructthe blocks 19 with the grain thereof arranged transversely or at rightangles to the direction of the grain of said ends and just before thesaid blocks 19 are placed into the openings 18 18 I apply glue to theedges thereof, and to the edges of said openings 18 18 in order tofirmly unite said blocks in wedging engagement with said ends when thesame are brought fully into contact by the bolts 22 22. In this way I amenabled to provide a fastenalower horizontal guide 11, and an upper ingmeans which will not work loose and eause undue rattling or vibrationwhich occurs where metal parts are used and merely inserted into theparts or ends to be united without positively securing said metal partsthereto.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. The combination with a piano case and guides secured therein, of adetachable keyboard bed having ends secured in said case within saidguides, said ends having the grain thereof disposed horizontally andprovided with rearwardly tapering openings, tapering blocks wedged insaid openings and secured to said ends and having the grain thereofdisposed at right angles to that of said ends, and said blocks providedwith threaded openings, and bolts extending through said case and ends,and engaging blocks secured therein, substan the tapering tially asspecified.

2. The combination with a piano case and guides secured therein, of adetachable keyboard bed having ends secured to said case within saidguides, said ends having the grain thereof disposed horizontally and provided with rearwardly tapering openings, tapering blocks wedged in saidopenings and rigidly secured to said ends and having

